| M.Q. Developer Instructions |
 '468' in the title means it includes Johnsons '142' developer improver and '326' wetting agent. M.Q. '468' originally introduced in 1953 (see 'Photography' magazine, May 1953)  |
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| M.Q. Developer Instructions |
|
'468' in the title means it includes Johnsons '142' developer improver and '326' wetting agent. M.Q. '468' originally introduced in 1953 (see 'Photography' magazine, May 1953) |
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